--- title: Inflow & Infiltration Solutions | RJN description: Our tailored inflow and infiltration programs pinpoint system defects and drive planning strategies to reduce excess flows for collection systems. --- # Inflow and Infiltration Solutions Aging infrastructure and community growth create opportunities for inflow and infiltration (I/I)—clean water—to enter wastewater collection systems. This robs critical capacity and increases treatment costs. At RJN, we offer comprehensive solutions to address inflow and infiltration in sewer systems, allowing you to restore system capacity and reduce operational costs. 175+ regulatory-driven I/I reduction programs 15% - 30% average SSO reduction ## Inflow and Infiltration Reduction Restores System Capacity We offer flexible approaches to locating I/I sources and measuring impacts that will make a difference to your ongoing system costs and operations. ## **Pinpoint Your Sewer** Inflow and Infiltration Sources ### Specialty tools and techniques enable our engineering professionals to detect critical I/I sources within your sewer system, ranging from basin-level projections to [in-pipe inspections](https://www.rjn.com/hubfs/Wastewater%20Services%20Brochures/RIT_10.8.2020-Final.pdf).  ### Inflow and infiltration quantification and mitigation solutions enable our engineers to confidently direct and prioritize sound mitigation measures. We view the system as a whole using proven, in-house algorithms to assign I/I rates to each defect and asset, ensuring the most efficient use of resources. ### Industry-standard condition ratings  establish reliable and actionable criticality scores for each asset,  enhancing the management of your wastewater infrastructure. RJN is a member of [NASSCO](https://www.nassco.org/) and uses PACP, LACP, and MACP scoring. ## **Program Strategies **Unique to Your System ### Our pilot or problem-specific approach focuses I/I investigations to provide [proof of concept](https://www.rjn.com/blog/tulsa-msi) for more expansive assessment programs. ### Our area-specific approach [targets inspections](https://www.rjn.com/case-study-glen-ellyn) and focuses analyses on known problem areas. ### Our staged approach uses a [prioritized strategy ](https://www.rjn.com/case-study-tra)to design system-wide studies required by regulatory mandates or for annual maintenance programs, and is always scaled to fit your budgets. ## **Confidently Reduce **System Inflow and Infiltration ### Tailored rehabilitation design prioritizes and provides the most impactful I/I mitigation solutions for your sewer system. ### Trenchless design expertise leverages [innovative rehabilitation techniques](https://www.rjn.com/blog/case-study-large-diameter-lining-project) to minimize construction costs and community disruptions, even in highly urbanized areas. ### Future Inflow and Infiltration program guidance delivers effective planning; capacity, management, operation, and maintenance (CMOM); [asset management;](https://www.rjn.com/asset-management) preventative maintenance; and private sector programs including ordinance review. ## **What is your challenge?** Tell us about your project ## Our I/I Success Stories Case Study, Wastewater, Design, Construction Management, Capacity Analysis [Wet-Weather Storage Mitigates Recurring Flooding Issues](https://www.rjn.com/experience/wet-weather-storage-case-study) 2 MG wet-weather storage Case Study, Wastewater, Design-Build, Design, Construction Management, Hydraulic Modeling [West Park Five Years Later: Alternatives Analysis Provides Proper Protection](https://www.rjn.com/blog/west-park-five-years-later)  article Inflow/Infiltration, Wastewater [When Inflow & Infiltration (I/I) Persists](https://www.rjn.com/blog/persistanti-i)  Article ### Who We Are ![icon-people-circ](https://www.rjn.com/hubfs/icon-people-circ.svg) [ Download PDF ](https://www.rjn.com/hubfs/Wastewater%20Services%20Brochures/General%20Brochure.pdf) ### Powerful Analytics with Clarity ![icon-analytics-circ](https://www.rjn.com/hubfs/icon-analytics-circ.svg) [ Download PDF ](https://www.rjn.com/hubfs/Wastewater%20Services%20Brochures/Clarity%20Sell%20Sheet.pdf)